X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmotionpixels.c;h=0ff8f3a54f357298e8630968d532e5806235c7dc;hb=ad12e9e8c054b904d564e1a183b73104bca2e3d5;hp=8c34e8b11312c8a9952fe9f65c4a377a0062fdc0;hpb=6bfb3042b3158f0a87629ab0c126cccb269c3d5a;p=ffmpeg

diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c
index 8c34e8b1131..0ff8f3a54f3 100644
--- a/libavcodec/motionpixels.c
+++ b/libavcodec/motionpixels.c
@@ -191,10 +191,13 @@ static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y)
             p = mp_get_yuv_from_rgb(mp, x - 1, y);
         } else {
             p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
+            p.y = av_clip(p.y, 0, 31);
             if ((x & 3) == 0) {
                 if ((y & 3) == 0) {
                     p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
+                    p.v = av_clip(p.v, -32, 31);
                     p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
+                    p.u = av_clip(p.u, -32, 31);
                     mp->hpt[((y / 4) * mp->avctx->width + x) / 4] = p;
                 } else {
                     p.v = mp->hpt[((y / 4) * mp->avctx->width + x) / 4].v;
@@ -218,9 +221,12 @@ static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb)
             p = mp_get_yuv_from_rgb(mp, 0, y);
         } else {
             p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
+            p.y = av_clip(p.y, 0, 31);
             if ((y & 3) == 0) {
                 p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
+                p.v = av_clip(p.v, -32, 31);
                 p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
+                p.u = av_clip(p.u, -32, 31);
             }
             mp->vpt[y] = p;
             mp_set_rgb_from_yuv(mp, 0, y, &p);